Thanks, Obama. Wait, are we still saying that? You could be in Greeley if you noticed the town’s famous stink hasn’t living up to its reputation. You could thank Trump, or you could just thank your lucky stars.

Tyler Silvy of the Greeley Tribune reported over the weekend that the bad smell the cow town is known for is either gone or people have gotten so used to it they’ve stopped complaining. No one in his story could pinpoint specifically why calls to the city’s odor hotline had fallen from 650 the year it started in 1997 to four last year.

“(O)fficials don’t know why, exactly, there is a drop,” Silvy reports.

It could be increased compliance with regulations by such sources of stink as the city sewer plant and JBS USA, the local meat-packing plant. JBS installed scrubbers and raised its smokestack to 180 feet in 2013 to help dissipate the stench. It could be that a big feedlot on the edge of town closed down.

If neophyte noses wonder how bad it was, Eric Schlosser wrote about it in his 2001 book “Fast Food Nation.”

“You can smell Greeley, Colorado, long before you can see it. The smell is hard to forget but not easy to describe, a combination of live animals, manure, and dead animals being rendered into dog food. The smell is worst during the summer months, blanketing Greeley day and night like an invisible fog.”

And another thing, people in the metro region with their noses in the air like to blame anything that smells like a cow blowing in from the northeast on Greeley. It’s not always Greeley, and local complaints suggest it never is.

The local government takes foul smell seriously. In December, seven miles to the south in Lasalle, Weld County shut down a renewable energy facility that converts cow manure from local dairies, grease and waste from restaurants and spoiled grocery store products in natural gas.

The company, Biogas, is suing in federal court because the county shut down its 1-year-old $115 million plant over a small number of complaints, while the plant was still in compliance with county odor levels.

And there are just a lot of cows in northeast Colorado. The National Agricultural Statistics Service reported the Colorado cattle herd in 2014 was almost 2.5 million. Most of them are on the northeast plains. Ninety percent of the state’s milk production happens in Weld, Morgan, Larimer and Adams counties. Ti size that up, figure the population of the seven-county Denver metro region is about 3 million humans.